Device for cutting box-board caps



(No Model.) 2 Sheets--Sheet 1. J. WEBER.

DEVICE FOR CUTTING BOX BOARD GAPS.

Patented Aug. 9, 1887.

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(No ModlQ) 2 Sheets-Sheet 2..

J. WEBER. DEVICE FOR GUTTINGYBOX BOARD GAPS. No. 367,875. Patented Aug, 9, 1887.

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To aZZ whom it may concern.-

, UNITED STATES PATENT O F-ICE.

JULIUS VVEBER OF READING, PENNSYLVANIA.

DEVlCE Foe CUTTING BOX-BOARD CAPS.

SPECIFICATION forming part of Letters Patent No. 367,875, dated'August 9, 1887.

Application filed September .2, 1886. Serial No. 212,479. (No model.)

Be it known that I, JULIUS WEBER, a citiv zen of the United States, residing at the city of Reading, county of Berks, State of Pennsylvania, have invented a new and useful Improvement in Devices for Cutting Box-Board Caps, of which the following is a specification. This improvement is applicable to many purposes in combination witha set of rotary cutters, but is more particularly designed for the use of paper-box makers;

The object of the improvement is to give uniformity to the caps or segments of hatboxes, to save time and material in getting out the same, and thus cheapen the production of hat-boxes. t

The drawings herewith, in which similar letters of reference indicate similar parts, disclose the machine'in which my invention is practically carried out. T

Figure 1 is a front elevation of a double rotary-knife trimming-machine with my improvement attached thereto. Fig. 2 is a plan of the same, showing the presser or clamp for holding the box-board in cutting; also showing partially the adjustable gage, which is more clearly shown in Fig. 4.. Fig. 3 is a reverse plan of the pivoted and sliding table, showing the slides with the pivo't-head and the screwconnection for adjusting the same relative to the cutters. Fig. 4 represents partially the head of the trimming-machine, showing the adjustable gage in connection therewith. Fig. 5 represents in section, on the line a a of Fig; 2, the table with the presser or clamp raised automatically therefrom by the spring attached to the clamp by'a link, as shown. Fig. 6 is a cross-section on the line b b'of Fig. 3, showing the guides, pivotal head, and socket and extension-bar, with the adjusting and retaining screws. Fig. 7 is a section on the line a c of Fig. 4, showing the construction of the sliding gage. Fig. 8 is a section on the lined d of Fig. 4., showing the supporting-fingers receiving the out caps or segments as they are separated from the box-board. Fig. 9 represents the extension supporting-bar, in side elevationand plan. Fig. '10 represents the clamp pressed down and held uponthe box-board by the left hand,as described. Fig. 11 represents a section through the pivoted head,

socket, and extension-bar at right angles with the section shown in Fig. 6. Fig. 12 represents in perspective the hat-box for which the box-board caps are cut, forming the overlap or ledge to the cover .of the same.

In thedrawings, A represents the shear or bed of the trimming-machine; A,itshead; B, bearings for the cutter-spindles; G, spindles; C,

spiral spring; D, cutters or knives; E, washers; F, nuts; G, gearing; H, crank for revolving the cutters; l, tension-pillars; 1, nuts to same. The tension-pillars support the upper port-ion of the machine, and when the nuts are screwed down prevents the strain of the upper knife in cutting being transmitted to the vertical end web and breaking the same above the lower spindlebearing.

My improvement consists, essentially, in the table J, constructed of a suitaple size for the support of the looX-looard to be operated upon.

Preferably it is made of light strips of wood' glued together and held by cleats J. A guidestrip, J is secured to the rear outer edge of the table, and has hinged to it at the cutter end a presser-clamp, J of the form shown, provided with a finger-hold, J*, and eye and loop J, 'of wire. A spring, K, is secured to the guide-strip J, and is provided with an arm, K,'and hook K over which the loop J is thrown when it is desired that the presscrclamp J shall automatically assume the position shown in Fig. 5. Upon the reverse face guides L are secured in a longitudinal direction by screws L, and between the same a sliding pivotal head, M, having flared edges adapted to the form of the guides, provided with a concave back, M, with end ledges, M", threaded at M, for the adjusting-screw N, a stem, M*, with a groove, M adaptedto fit and revolve freely in a socket-piece, I, having an oblong stem, P, to slide free in the slot Q of the extension-bar Q, with a threaded end and nut, Pi by which the socket'piece M is secured at any desired point within said bar, and a set-screw, P",to retain the stem M in place. The bar Q, provided with slot Q, is secured to the bed A of the trimming-machine by a'bolt, Qfl'through the end hole, Q of the bar.

The gage R is composed of a bar bent to a points upon its curvature fingers It, secured to the bar by rivets R, with the free ends of the same curved outward from each other. An eye, It, upon the inner end permits the gage-bar to be swung around upon the pillar I as a center, and, when adjusted to suit the cap or segment to be cut, is held in position by tightening up the nut I. Adjusting-stops S are passed through the bar at determined points, as shown in Fig. 7, have a return-bend S passing under the bar R, and a stop, S, upon the end of the same. with handle S, serves to hold the stop in place when adjusted for width of segment or cap.

A screw, N, adapted to the threaded ledges M of the sliding pivotal head M, of a length to reach from the rear to the extreme inner ends of the guides L, has a collar, N, and crank I", and is supported in bearing N upon the reverse face of the table, at its outer end. The operation of the device is as follows: First, the extension-bar Q is clamped bythe bolt and nut Q to the bed or shear of the trimming-machine; second, the socketpiece has its oblong stem P placed in the slot Q, and is clamped to the bar Q by the nut l at a point somewhat near the radial distance from the cutters requisite to cut the proper form of cap or segment for the box. The table J is then lifted above the socket-piece P, with the sliding pivotal head M attached, and its stem M inserted within the socketand the table d ropped until it rests upon the socket-piece with the groove M of the stem in line with the rounded point of the set-screw P", which is then screwed inward until it is in free contact with said groove. The table will then be free to revolve horizontally upon said socket-piece. The boxboard to be cut is now laid upon the table with one ofits edges lying in contact with the guidestrip J. The presser or clamp J is pulled down upon the board with the left hand, and the front edge of the table and clamp held operatively thereby. The crank H of the trimming-machine is then turned with the right hand, which operates both spindles and cutters through the gears G, and, pressing the table away from the operator, a cut is made of a circular form. The crank N and screw N permit the longitudinal adjustment of the table upon the sliding head, so that any desired nieety of adjustment may be secured independent of the quick but rough adjustment for radial distances upon the extension-bar. The gage-bar R is then brought into action. It is swung around as closely to the end of the box-board as the width of cut to be made will permit, and secured in position by tightening up the nut I. Then measuring the width of cut to be made opposite the stops S", the same are adjusted to suit said measure, and are then severally secured in position by tightening up their respective screws S". The gage having been adjusted, as described, the presser J J is slightly released, the spring K instantly raising the same and per- A set-screw, S,

mitting the free movement of the box-board upon the table, which is then shoved forward (beyond and in rear of the cutters) until. the cut edge strikes against the gage-stops S. The presser is then brought down upon the box-board, the cutters revolved, and the table drawn toward the operator, when a second cut is made, this time producing a segment of an annular fiat ring adapted to form the side of a hat-box, having a curved longitudinal surface given to its cover or cap. A repetition of the movements will cut the entire sheet of box-board, as long as it can be clamped by the presser J, into a series of uniform caps or segments for the purpose desired, as long as the gage is left undisturbed.

Having shown my improvement, described its operation, and recited the advantages of its use, I desire to claim as follows:

1. As an improved device for cutting boxboard caps or segments in paper-box making, the table J, provided upon its upper surface with a guiding-strip, J a presser-clamp, J, hinged to said guiding-strip and having an eye-audloop connection, with a spring, K, attached to said strip, whereby said prcsser is automatically raised from the face of said table, and upon its reverse face longitudinallyplaced guides L, adapted to receive a sliding head, M, having a stem, M, and groove M", movably fixed at any point within said guides by a screw, N, operated by a crank, N", and its threaded connection with the ledges of the said head, as and for the purpose set forth.

2. In combination with a table, as shown and described, a socket-piece, P, having an oblong stem, 1?, nut P", and set-screw I, the latter adapted by its rounded point to fill the groove M of the stem M of the table sliding 'head, and thus prevent automatic disengagement and permit free revolution of the table upon said socket-piece, the sliding head M, with its stem M and groove Ni, and the extension-bar Q, having slot Q, to secure tl'te adjustment of said socket-piece, substantially as and for the purpose set forth.

3. In combination with a table, J, and seeket-piece P, as shown and described, a sliding head, M, having flaring edges adapted to the guides of said table, having a concave back with end ledges, M, threaded to fit the screw N of said table, a stem, M", with a groove, M. adapted to fit and revolve freely within said socket and to be retained therein by the setserew P", the slides L, and screw N, substantially as and for the purpose set forth.

4. In a paper-boX-cutting machine, as shown and described, the swinging gage R, provided with fingers R, secured thereto, and the adjustable gages S, movabl y secured in said gagebar It by set-screws S and having a recurved portion, S, and stops S, eye R, and nut I, substantially as and for the purpose set forth.

5. In a paper-box-cutting machine, the combination, with the trimming-cutters, shear or bed, and pillars of the same, of a table having a longitudinal movement upon an adjustable the said adjustable pivot-head, guides, stein, pivot-head, held in guides upon the reverse and socket-piece, as and for the purpose set 10 face of the same, and a revolving movement forth. upon and within asocket-piece adapted to the j 5 stem of said head, and removably held therein JULIUS WEBER by screw P an extension-bar, Q, secured 'by Witnesses:

bolt and nut Q to said bed, and having a slot, HOWARD P. WANNER, I Q, for adjustably fixingsaid socket by nut 15, H. G. WEBER. 

